#include<iostream>
using namespace std;
namespace first_space{
	void func(){
		std::cout << "inside first_space" << endl;

	}
}
namespace second_space{

	void func(){
		std::cout << "inside second_space" << endl;

	}
}int main()
{
	first_space::func();
	second_space::func();
	system("pause");
	return 0;
}